>>718924783
>>718924578
I think the custodes are on it. It's all part of the Emperor's plan.

During the heresy, in the last day of the webway's war, the sacrifice of one thousand random psykers allowed the Emperor to briefly leave the throne, and after that it went on and on.

Now, imagine bringing in one thousand of some of the most powerful, elite astartes psykers. Literally the best dinner the Emperor ever had. Could grant him quite some freedom and powers.